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A 22 {\rm kg} sphere is at the origin and a 12 {\rm kg} sphere is at (x, y) = ( 22 {\rm cm} , 0 {\rm cm}) At what point or points could you place a small mass such that the net gravitational force on it due to the spheres is zero?
A 48dB sound wave strikes an eardrum whose area is 4.2×10?5m^2. How much energy is absorbed by the eardrum per second
Calculate the minimum required initial velocity for a home run, for baseballs hit at the angles 10 degree, 20 degree, 30 degrees, and 40 degrees from the horizontal
Planet Z is 1.00×104km in diameter. The free-fall acceleration on Planet Z is 10.0m/s2. What is the mass of Planet Z
An astronaut moving with a speed of 0.53c relative to Earth measures her heartrate to be 71 beats per minute. Calculate the astronaut's heart rate, as measured on Earth
how many turns should a solenoid of cross-sectional area 0.035 m2 and length 0.39 m have if its inductance is to be 48
Two large, parallel, conducting plates are 16 cm apart and have charges of equal magnitudeand opposite sign on their facing surfaces. An electrostatic forceof3.1*10-15 N acts on anelectron placed any where between the two plates. (Neglectfringing).
We have a container of compressed air. Assume that air is a diatomic ideal gas. The volume of the container is 1.35 liters. Find the final volume of the gas
A neutron star and a black hole are 2.900e+12 m from each other at a certain point in their orbit. What is the magnitude of the gravitational attraction between the two
An electron and a proton each have a thermal kinetic energy of 3×kBT/2. Compute the de Broglie wavelength of each particle at the temperature of 2050 K. (kb is Boltzmann's constant, 1.38×10-23 J/K).
A small grinding wheel has a moment of inertia of 4.0×10?5 . What net torque must be applied to the wheel for its angular acceleration to be 150
A 0.135 kg ball is thrown straight up from 2.20 m above the ground.Its initial vertical speed is 9.60 m/s. A short time later, it hits the ground. Calculate the total work done by the force of gravity during that time.
measuring the speed of light michelson in 1926 albert michelson measured the speed of light with a technique similar to
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